Home / 287,711,999.10-431,567,998.65-172,826,264.70

Finding the Fourth Proportional to 287,711,999.10, 431,567,998.65 and 172,826,264.70

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Solution

The fourth proportional to 287,711,999.10, 431,567,998.65 and 172,826,264.70 is: 259,239,397.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,711,999.10 : 431,567,998.65 = 172,826,264.70 : x
  2. Step 2: Convert to fraction form
    287,711,999.10/431,567,998.65 = 172,826,264.70/x
  3. Step 3: Cross multiply
    287,711,999.10x = 431,567,998.65 × 172,826,264.70
  4. Step 4: Simplify right side
    287,711,999.10x = 74,586,285,170,734,128
  5. Step 5: Solve for x
    x = 74,586,285,170,734,128/287,711,999.10
  6. Step 6: Final answer
    x = 259,239,397.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.